Verify that your Infrastructure as a Service Microsoft Windows host machine is hardened according to VMware guidelines.
Review the recommendations in the appropriate Microsoft Windows hardening and secure best practice guidelines, and ensure that your Windows Server host is appropriately hardened. Not following the hardening recommendations might result in exposure to known security vulnerabilities from insecure components on Windows releases.
To verify that your version is supported, see the vRealize Automation Support Matrix.
Contact your Microsoft vendor about the correct guidance for hardening practices of Microsoft products.